Howard



'H. E. GOFFIN.

EXPLOSION ENGINE. APPLICATION FILED JUNE 27, 1910.

1,024,618. Patented Apr. '30, 1912.

F O F 1 Z J g; 7' g X I g L W Y Zazwar C af/z'n UNITED vsrm'rns PATENT oF cE:

V I f a 'EirnosIoN-nmnm 1,024,618. y L Snqiiqt of t n -f PatentedApn3Qy19 1 2.

To all whom it mag comm: Be it-k'nown that I, HowAn'n E. Corrm, a citizen of the United States of America, residing atDetroit, in the county of Wayne 5 and State of Michigan, have invented certainnew and useful Improvements in Explosion-Engines, of which the following is a specification, reference being had therein to the accompanying drawings-) The invention relates to explosion en-' gines of that type in which a."rotarydisk valve employed, said valve being seated an the inner face of the head of. the cyliner. a It is-one of the objects of the invention 'to' obtaina construction in which the engine cylinder. and the head upon whichthe valve is seated may be formed of separable members, thereb facilitating access to'the valve and simplil ying the machine work in con struction. I 1 Y Another object isto protect the'joint' between the cylinder head so as to avoid leakage.

'Still another object is to prevent leakage ofthe valve particularlyat the periphery thereof and at points adjacent tothe ports.

With 'theseobj'ects in view the invention consists in the construction as hereinafter set forth. v

In the drawings -Figure 1 is a longitudinal central section through an engine to. whichjmy; improvements are applied.

' Fig. 2 is a section on line :v-Izv Fig. 1. Fig.

fied'crmstrnction.- I Y L I A is-the en e cylinder which is preferably provi with the usual surrounding water jacket B; C is a'sepa'rable head for the cylinder in which the inletand' exhaust ports'D and E-are formed; This head 15 also chambered as at F to form a. water.

jacket, and if. desired this; -'acket may be placedin communication w1t the jacket of the cylinder through registering The head is secured to the cylinder of the'cylinder A, and. the

I I Application filed June=27,-1910. S erlaI'No. 569,063

which will decrease leakage.

3 is a view similar to Fig. 1 showing a modiiorts- G; y studs or tap bolts H, a'suitable gasket-'beingused the inner faceof thehead C and has an acof; s htl eater diameter: on sa hg y gr the periph ry; of said 5'. In an explosion e provided with a recess or counter- A 1n 1 h e' d an ofi-set or a break joint between the explo'sion chamber and the head vof the valve Tofurther avoid leakage, the .joint is preferably] packed by a peripheral ring which as shown groove in the disk I and bearing against the counterbore of the cylinder. In Fig. 3 a modified construction is shown in which a ring'M is arranged at the angle of the counterbore andis a'daptedto engage atom-- plementary angle or 'rabbet groove formed in Fig. 1, is a ring L engaging aperiph'eral in the disk I. With both constructions, the v packing ring in connection with the lubrieating oil fed'between' the valveand' it's seat, Wlll effectually seal the joint, preventin first, leakage from the valve ports aroun the periphery and second, leakage from the 5 v7 I explosion chamber of the'cylin'de'r around the periphery of the valve and through'the' joint between the cylinder and" the head. Furthermore, the engagement of the disk with the counterbore' will protect; the joint between the head and cylinder from the heat developed within the cylinder. The valve stem J may be driven by a gear 0 mounted thereon whichis housed by a cap P secured to the'head C. This construction also-per mits of readily-casting the intake and exhaust headers integralfwith the-head C- of;

the cylinder as shown at Q andflR Fig.2. W at I claim as my, invention is:

. 1; In an explosion engine, the combina'- tion of a cylinder, a separable head there 'for, and a rotary disk-valve seated: upon" said head andpackin means for said valve protecting the joint tweenthe head and cylinder.

2. In; an explosionlengine, the combination of'a cylinder, a separable headthere for, a rotary disk valve seated upon "said vhead, and packing-means at the periphery of said-valve for protecting the joint between said'head-and cylinder.

3. In an explosion engine," tion of acylinder a, separable'head therefor, a' rotary. disk, valve seated on said"- head-and forming a break joint with said cylinder.- I

'4. In an explosion engine, the *combina? 'tion' with an engine-cylinder, ofa separable .1 00" the combinahead'therefor, a -rotary disk valve: 1

d head, and a .p nd

therefor, a rotary disk valve seated on said head, and a packing ring engaging a groove in the peripheryof said disk.

6. In an explosion engine, the combination With a cylinder, of a separable head therefor, a rotary disk valve of greater diameter than the bore of said cylinder seated on said head and engaging a counterbore at the end of said cylinder, and a packing ring engaging said counterbore and the periphery of said disk. I e i 7. In an explosion engine, the combination of a cylinder having a recess at the top thereof of greater diameter than its bore, a rotary valve seated W1th1n said recess, an

annular packing ring positioned intermediate the valve and its seat, and a detachable head for the cylinder having a portion extending'over the periphery of the valve.

In testimony-whereof I affix niy signature in presence of two witnesses.

HOWARD E. COFFIN.

Witnesses: I ETHEL J. ESSIG, ,C. W. DICKERSON. 

